Schüssler Tissue Salts act on the cellular level to balance and restore cell function. UNDA Tissue Salts are prepared using methods based on Dr. W. H. Schüssler Biochemical System of Medicine (in accordance with the German Homeopathic Pharmacopoeia [HAB]). UNDA is a world-renowned homeopathic products company founded in 1949 in Harzé, Belgium. Established over half a century ago in Belgium, UNDA is renowned for manufacturing exceptional homeopathic products that use only pure materials and herbs that are biodynamically grown or wildcrafted. Its diverse product line includes single-ingredient and combination homeopathic remedies, topical creams, tablets, and natural health products. UNDA products are formulated using a combination of GMO-free plant, mineral, and organic raw materials obtained primarily from local sources.